Underwood Ammo 863Underwood Ammo 863 Xtreme Defense 9mmLuger 68gr Solid Monolithic 20 Per Box/10 Case
$29.02
Underwood Ammo 863 Xtreme Defense 9mm Luger ammunition delivers a purpose-built round for shooters serious about defensive performance. Loaded with a 68-grain solid monolithic copper bullet, this round combines modern ballistic engineering with proven reliability. Each box contains 20 rounds of new production ammo in nickel-plated brass cases, loaded with boxer primers and designed to be reloadable for shooters who reload their own ammunition.
The solid copper construction means this 9mm handgun round is lead-free—important if you shoot regularly at indoor ranges or in enclosed spaces. Clocking out at 1,700 feet per second, the round is fully supersonic, generating 436 foot-pounds of muzzle energy. That velocity and energy profile, paired with the monolithic bullet design, makes this ammo a solid choice for both self-defense applications and hunting where barrier penetration and reliable expansion matter. The ballistic coefficient of 0.087 G1 and sectional density of 0.077 mean the bullet maintains its trajectory and delivers consistent performance downrange.
Non-corrosive and suppressor-safe, these rounds work in any 9mm Luger firearm. Whether you're stocking a carry gun, prepping for defensive training, or hunting small to medium game, Underwood's Xtreme Defense line offers the kind of attention to terminal performance that separates quality defensive ammo from generic range loads. The nickel-plated brass also resists corrosion better than standard brass, useful if you're storing ammo long-term or shooting in damp conditions.
Key Features
- Solid monolithic copper bullet—lead-free construction for indoor and range shooting
- 68-grain projectile at 1,700 fps and 436 ft-lbs muzzle energy
- Nickel-plated brass cases resist corrosion and wear in the mag and chamber
- Boxer-primed and reloadable for shooters who reload
- Non-corrosive formulation—safe for all firearms and training environments
- Suppressor-safe performance
- New production ammunition with consistent quality control
Specifications
| Caliber | 9mm Luger |
| Bullet Weight | 68 grains |
| Bullet Type | Solid monolithic copper |
| Bullet Diameter | 0.355" |
| Muzzle Velocity | 1,700 feet per second |
| Muzzle Energy | 436 foot-pounds |
| Ballistic Coefficient (G1) | 0.087 |
| Sectional Density | 0.077 |
| Case Type | Nickel-plated brass |
| Primer | Boxer |
| Reloadable | Yes |
| Corrosive | Non-corrosive |
| Lead Content | Lead-free |
| Suppressor Safe | Yes |
| Rounds Per Box | 20 |
| Production | New production |
Frequently Asked Questions
Is Underwood Xtreme Defense 9mm safe to use in suppressors?
Yes, this ammo is rated suppressor-safe. You can run it through any quality 9mm suppressor without concern.
Can I reload these brass cases?
Yes. The ammo comes in boxer-primed, nickel-plated brass cases that are reloadable, so you can recycle the brass after firing.
Is this ammunition lead-free?
Yes, the solid monolithic copper bullet contains no lead, making it suitable for indoor ranges and environments where lead exposure is a concern.
How many rounds are in a box?
Each box contains 20 rounds of loaded ammunition.
